Hybrid Marker

A referencing exit marker or REM is a relatively new marker designed to be used as an arrow by the diver placing it and a cookie by others; as such, we are calling it a hybrid marker. A REM is rectangular in shape with slots included to allow divers to attach it to a line. It also has blank space available to include personal or team identification on one side and a small slate on the other to write on for reasons such as survey work, team separation (i.e. I exited the cave at 37 minutes), and more.

Referencing exit markers must be clearly labeled and marked to show the direction which a diver or team came from, it is a personal identifier; it is not to be confused by other divers who took a different route. If a diver comes across a REM, the direction of the marker should not be considered since a suitable exit for a small sidemount diver may not work for a large back-mount diver.

Since cave divers may encounter variations of markers from region-to-region, it is the responsib